story: Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest. 
  
  Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the complete blockage of a coronary artery caused by a rupture of an atherosclerotic plaque. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.
questions: What can a heart attack symptom feel like?
questions: Which symptom?
questions: Can this pain travel?
questions: Does it go to the lower part of the body?
questions: What about the jaw?
questions: The shoulder and arm?
questions: What is the real name of a heart attack?
questions: What disease usually causes this?
questions: Does this involve the blocking of something?
questions: What?
questions: What happens to plaque?
questions: Which kind of plaque?
questions: Can smoking increase this possibility?
questions: What can be caused by drug use?
questions: Are there tests around for diagnosis?
questions: How many?
questions: What kind of test is creatine kinase MB
questions: Are women or men more likely to have atypical signs?
questions: How many people have atypical signs?
questions: Can being sick to your stomach be one?
answers: heartburn
answers: The discomfort may occasionally feel like heartburn.
answers: chest pain
answers:  The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. 
answers: yes
answers: The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. 
answers: no
answers: The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw.
answers: yes
answers: The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw.
answers: yes
answers: The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw.
answers: Myocardial infarction (MI) or acute myocardial infarction (AMI)
answers: Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, 
answers: coronary artery disease
answers: Most MIs occur due to coronary artery disease.
answers: yes
answers:  The mechanism of an MI often involves the complete blockage of a coronary artery caused by a rupture of an atherosclerotic plaque.
answers: a coronary artery
answers: The mechanism of an MI often involves the complete blockage of a coronary artery caused by a rupture of an atherosclerotic plaque.
answers: it ruptures
answers: The mechanism of an MI often involves the complete blockage of a coronary artery caused by a rupture of an atherosclerotic plaque.
answers: atherosclerotic plaque
answers: The mechanism of an MI often involves the complete blockage of a coronary artery caused by a rupture of an atherosclerotic plaque.
answers: yes
answers: Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others.
answers: MI's are less commonly caused by them
answers: MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others.
answers: yes
answers:  A number of tests are useful to help with diagnosis,
answers: a number of them
answers: A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography.
answers: a blood test
answers: Commonly used blood tests include troponin and less often creatine kinase MB.
answers: women
answers: About 30% of people have atypical symptoms, with women more likely than men to present atypically.
answers: about 30% of people
answers: About 30% of people have atypical symptoms,
answers: yes
answers: Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired.